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authorJason Riedy <ejr@EECS.Berkeley.EDU>2006-01-25 20:38:36 (GMT)
committerJunio C Hamano <junkio@cox.net>2006-01-25 23:10:39 (GMT)
commit731043fd4d55b1561ebb5a53daa4b9ff6dfac046 (patch)
tree15c382b6fd015b5da5be577c57f76bc5096040d6 /compat/unsetenv.c
parent5ea06e2014a910240408f74b9dab2128a30fd06c (diff)
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Add compat/unsetenv.c .
Implement a (slow) unsetenv() for older systems. Signed-off-by: Jason Riedy <ejr@cs.berkeley.edu> Signed-off-by: Junio C Hamano <junkio@cox.net>
Diffstat (limited to 'compat/unsetenv.c')
-rw-r--r--compat/unsetenv.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/compat/unsetenv.c b/compat/unsetenv.c
new file mode 100644
index 0000000..3a5e4ec
--- /dev/null
+++ b/compat/unsetenv.c
@@ -0,0 +1,26 @@
+#include <stdlib.h>
+#include <string.h>
+
+void gitunsetenv (const char *name)
+{
+ extern char **environ;
+ int src, dst;
+ size_t nmln;
+
+ nmln = strlen(name);
+
+ for (src = dst = 0; environ[src]; ++src) {
+ size_t enln;
+ enln = strlen(environ[src]);
+ if (enln > nmln) {
+ /* might match, and can test for '=' safely */
+ if (0 == strncmp (environ[src], name, nmln)
+ && '=' == environ[src][nmln])
+ /* matches, so skip */
+ continue;
+ }
+ environ[dst] = environ[src];
+ ++dst;
+ }
+ environ[dst] = NULL;
+}